Charles, it had become apparent, was the patron of the Arminians and their attempt to redefine Anglican doctrine. Arminians in turn favoured Charles’s causes against Puritans and Parliament. This alliance held despite increasing pressure on Charles to cooperate with Parliament on economic and military matters. The resulting civil war between the forces of the king and those of Parliament was hardly just a religious struggle between Arminians and Calvinists, but conflict over religion played an undeniably large role in bringing about the Puritan Revolution. As Protestantism split, so did English society.